Mechanisms of weed community formation and maintenance driven by weed management: from patterns and changes in phylogenetic structure

2023 Fiscal Year Final Research Report

• Project/Area Number: 19K20493
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 64040:Social-ecological systems-related
• Research Institution: National Agriculture and Food Research Organization
• Principal Investigator: Matsuhashi Saeko 国立研究開発法人農業・食品産業技術総合研究機構, 植物防疫研究部門, 主任研究員 (20720626)
• Project Period (FY): 2019-04-01 – 2023-03-31
• Keywords: 農業生態 / 雑草 / 外来種

Outline of Final Research Achievements

Understanding the mechanisms of formation and maintenance of weed communities under human management is a challenge in environmental management, as well as leading to a better understanding of contemporary ecosystems. This study aimed to synthesise information on weeds in agricultural lands in Japan and to elucidate the formation and maintenance mechanisms of weed communities under human management of agricultural lands. The analysis showed that the composition of weeds differed significantly by cultivation category, suggesting a filtering function of cultivation management. It was also suggested that information on the origin of alien species could be useful for a simplified understanding of invasion risk on domestic farmland. Thus, knowledge leading to a comprehensive understanding of the structure of farmland weeds in Japan was obtained, and useful information contributing to improved management efficiency and measures against invasive species was obtained.

Free Research Field

植物生態学

Academic Significance and Societal Importance of the Research Achievements

本研究は、国内における農地雑草情報を統合し、様々な農地環境条件と共に分析することで、管理の変化や差異が草本の分布をどのように規定していくかを明らかにした。それにより国内の農地における雑草群集の構造や維持機構の包括的理解に繋がる知見を得ることができた。このことは、農地の雑草管理の効率化や外来種対策等に資する有用な情報となることが期待できる。